Philo Vance
Jimmie Spottswoode
The Canary
Alice LaFosse
Charles Spottswoode
John Cleaver
Dr. Ambrose Lindquist
District Attorney Markham (as Captain E. H. Calvert)
Sergeant Heath
Tony Skeel
Louis Mannix
George Y. Harvey (uncredited)
Body Double for Louise Brooks (uncredited)
Stuttering Hallboy (uncredited)
